KR100697187B1 - Full duplex service system and method of ground wave digital multimedia broadcasting linked mobile radio communication network - Google Patents

Abstract

The present invention relates to a system and method for two-way broadcasting service of terrestrial DMB interworking with a mobile communication network. The present invention relates to a mobile multimedia network receiver receiving program information on broadcast contents provided from a broadcasting center to a subscriber. Using the digital multimedia broadcasting system consisting of communication terminals, user application information is extended through the fast information group (FIG) format 0 to 13 of the fast information channel (FIC), the Eureka-147 standard for digital multimedia broadcasting. Define and perform a two-way broadcast service with the mobile terminal.

Terrestrial DMB, two-way broadcasting service

Description

FULL DUPLEX SERVICE SYSTEM AND METHOD OF GROUND WAVE DIGITAL MULTIMEDIA BROADCASTING LINKED MOBILE RADIO COMMUNICATION NETWORK}

1 is a diagram illustrating a DMB channel allocated to one broadcast channel;

2 shows one multiplex,

3 is a view showing a data format of the Eureka-147 standard;

4 is a view showing in detail the FIC of the DMB multiplex of the present invention;

5 is a detailed view of an MSC;

6 is a diagram illustrating a DMB broadcasting system according to the present invention;

7 is a view showing in more detail the mobile communication terminal,

8 is a diagram showing a bidirectional DMB service method according to the present invention;

9A to 9G illustrate examples of a service providing method of the present invention.

* Explanation of symbols for main parts of drawings *

1: DMB channel 2: Guard band

5: Broadcasting Service Center 7: DMB System

9: mobile communication system 11: mobile communication terminal

13: DMB module 15: mobile communication module

17: control unit 19: memory

21: output device

The present invention relates to a two-way digital multimedia broadcasting service, and more particularly, to a two-way broadcasting service system and method of a terrestrial DMB interworking with a mobile communication network for implementing a two-way broadcasting service using a terrestrial digital multimedia broadcasting and a mobile communication system. will be.

Recently, with the improvement of performance according to the related technology development of the mobile communication system and the appearance of the next generation broadcasting system, Digital Multimedia Broadcasting (DMB), access to multimedia such as video using a portable terminal device has become easier. Mobile communication transmits broadcasting, music, and images by using a high-speed data service to be used by a user, and DMB can use services such as high-quality video and music by commencing commercial service soon.

DMB digitizes and transmits the path from the production of programs such as video and music to viewers, so that it is more resilient than the analog method, and it is possible to provide high quality screen, sound, and additional data services. In addition, as broadcasting becomes digital, it is possible to transmit a CD (Compact Disk) level sound quality and various data and images. In particular, the DMB can be used not only as a DMB dedicated terminal device but also as a dual terminal device by implementing a DMB module and a mobile communication module in one terminal device. Such DMB is regarded as a medium that can facilitate the implementation of interactive multimedia. The DMB system provides a method for overcoming the limitations of information sharing in the conventional analog broadcasting by providing various information in the image and sound source transmitted through digital data.

In addition, the mobile communication system has become easier to implement multimedia with the appearance of the third generation mobile communication system such as IMT2000. The third generation mobile communication system is a remarkable technology improvement in the field of data communication, and the data processing speed and the amount of data that can be processed have increased in comparison with the conventional mobile communication. This improvement in data processing capability has provided an opportunity to provide users with a mobile communication terminal with multimedia services such as high-quality video and music and data communication such as wireless Internet. In addition, like a DMB system, a mobile communication system can communicate data between a network and a terminal, and can provide additional information when providing a video or music to a user. In the case of the wireless Internet, a user connects to a common data communication system such as the Internet regardless of place and time by using a terminal device such as a laptop or a personal digital assistant (PDA). It provided a possible basis.

Meanwhile, FIG. 1 illustrates a DMB channel allocated to one broadcast channel. As shown in FIG. 1, channels allocated to provide a DMB service are channels 8 and 12 which are not used among existing VHF channels. to be. Each channel has a bandwidth of 6MHz, and one channel will accommodate three channels of DMB channels, for a total of six channels. As such, three channels can be accommodated in one broadcast channel because the bandwidth of one DMB channel is approximately 1.536 MHz.

A data structure for transmitting broadcast data to the DMB channel is called a multiplex or ensemble, and is composed of an information area including information such as broadcast and frequency and a data area for actual broadcast. This is illustrated well in FIG.

As described above, since channels except for 8 and 12 are being used as existing VHF channels, 3 and 8 DMB channels 1 are accommodated in channels 8 and 12, respectively. Each of these DMB channels has a bandwidth of 1.536 MHz, and the bandwidth actually used for broadcasting is about 1.1 MHz. This is because an error correction code or information is transmitted for stability of data transmission and reception for broadcasting. A guard band 2 is set between each DMB channel 1 to prevent crosstalk between frequencies, and each DMB channel 1 is set at intervals as shown in the figure.

The DMB adopts the Eureka-147 EN 300, 401 standard, the European Digital Audio Broadcasting (“DAB”) standard as its basic standard. In the DAB used in Europe, the recent development of compression technology such as H-264 enabled the transmission of more data over the existing bandwidth, which made DMB practical. The data format of this Eureka-147 standard is shown in FIG. As described above, the Eureka-147 is composed of one multiplex. The data included in the multiplex is audio, video, still picture, text information, and the like. Compression techniques for transmitting them must be defined, and Bit Sliced Arithmetic Coding (BSAC), H.264 for compressing video and Part 10 of the MPEG4 specification for audio compression, is used. Here, a compression technique such as MPEG4 is called middle wear, and it is clear that a multiplex representing a data structure is a different concept as a physical layer.

However, the current DMB broadcasting service in the mobile communication does not implement a bidirectional broadcasting service which is one of its great features. In other words, the DMB broadcast described above still focuses on one-way transmission, i. However, DMB is easy to implement bidirectional because all data is digitized and transmitted. This is because various information data and link data can be transmitted together with the broadcast data, and processing at the receiving terminal is easy.

Recently, BIFS (Binary Information For Scene) has been used as a way to utilize these two-way features in forums for DMB broadcasting. This is a middleware approach that adds a middleware configuration to provide two-way communication or services in addition to video and audio. However, this method defines only the services and methods to be implemented, and only pursues the splendor of broadcast services. The BIFS is from a next-generation broadcast forum involving multiple stations, Net & TV, and ALTI Cast, and requires at least two to three years to implement. In addition, when applying the BIFS, a high specification of the user terminal is required, and even when using a high-end terminal, there is a problem that a communication engine for communication between each other (Communication Engine) is required.

In addition, the high-speed information block (Fast Information Group: hereinafter referred to as "FIG") of the fast information channel (hereinafter referred to as "FIC") for displaying video and audio data information in the Eureka-147 standard by the applicant. A technique for implementing an interactive service using an area currently reserved is proposed. However, if the reserved area is not standardized and the standardization organization uses the current area for other purposes, the high-speed information channel ( Among the FICs, the high-speed information block (FIG) interactive service implementation technology becomes meaningless, resulting in a problem that the mobile service task cannot be efficiently used.

Accordingly, the present invention is to solve the above problems of the prior art, an object of the present invention is the simplest and most effective way to implement a two-way broadcast service using mobile communication, DMB defined in the Eureka-147 standard of digital multimedia broadcasting The present invention provides a bidirectional broadcast service system and method for terrestrial DMB linked to a mobile communication network which performs a bidirectional broadcast service with a mobile communication terminal through FIG. 0 through 13 extensions.

In order to achieve the above object, the present invention provides a broadcast service center for creating digital multimedia broadcast data, the broadcast data related information, and the link data; A digital multimedia system for providing a user with the digital multimedia broadcasting data, the broadcasting data related information, and the link data added to the broadcasting data from the broadcasting service center; A mobile communication system for forming a communication channel for accessing the broadcast related information by the link data; And a mobile communication terminal configured to receive the digital multimedia broadcasting data and the link data, form a communication channel with the mobile communication system, and provide a user with the broadcast related information received through the communication channel. In the interactive terrestrial DMB bidirectional broadcast service system,

A mobile information system that defines user application information and performs a two-way broadcasting service with a mobile communication terminal by extending Fast Information Group (FIG) formats 0 to 13 of the Eureka-147 standard of the digital multimedia broadcasting. A bidirectional broadcast service system of terrestrial DMB linked to a communication network.

At this time, the mobile communication terminal, DMB module (DMB Module) for receiving the digital multimedia broadcasting data, the link data; A memory for storing the link data and the application program; An output device for outputting the broadcast data and the broadcast data related information; A mobile communication module for establishing a communication channel with the mobile communication system for receiving the broadcast data related information; And a controller for controlling the DMB module, the mobile communication module, and the output device, extracting the link information from the link data, and allowing the mobile communication module to form a communication channel.

In addition, the present invention is linked to a mobile communication network using a digital multimedia broadcasting system consisting of a mobile communication terminal for receiving program information in association with a digital multimedia broadcasting receiver for receiving program information on the broadcast content provided to the subscriber to the broadcast center. In the two-way broadcast service method of terrestrial DMB,

User Information Information is defined through Fast Information Group (FIG) format 0 to 13 extension of Fast Information Channel (FIC), the Eureka-147 standard of the digital multimedia broadcasting, and a two-way broadcasting service with a mobile terminal is provided. It relates to a two-way broadcast service method of the terrestrial DMB linked to the mobile communication network characterized in that performed.

In addition, the present invention defines user application information through the fast information group (FIG) format 0 to 13 extension of the fast information channel (FIC), the Eureka-147 standard for digital multimedia broadcasting, and defines the user application information. In the two-way broadcast service method of the terrestrial DMB interworking with the mobile communication network performing a two-way broadcast service,

Receiving DMB broadcast data to decode a fast information channel (FIC); Determine whether to decode the user application information in the decoding state, and decode the audio / video so that the application is reproduced as audio / video when decoding the user application information, or decode by MSC when not decoding the user application information. And decoding the decoded MSC into audio / video and reproducing the decoded audio / video to an application and reproducing the decoded MSC.

At this time, when decoding with the user application information, determining whether or not the user selection, and if it is determined that the user has selected the application driving step of driving to the selected application; And transmitting the data through the user interface so that the corresponding application driving is reproduced by the audio / video application.

The user application information may include a service IDentifier (SID) that provides a basis for determining whether to view a specific broadcast service as a key value defining a service of a corresponding ensemble; Service Component IDentifiers (SCIDS) for providing a basis for whether a specific service component exists as a Key value defining one broadcast service in which two service components may exist; A user application number (number) defining the number of application services present in the broadcast service; Includes at least one N-th user application that is a value associated with a particular application to activate the application,

The N-th user application includes: a user application type (User Application Type) that is a value associated with a specific application; A user application data length defining a length of user application data; And user application data, which is a format in which values necessary for activating a CDMA-linked application are defined.

Other objects and advantages of the present invention other than the above objects will become apparent from the detailed description of the embodiments with reference to the accompanying drawings.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

4 is a detailed view of the FIC of the DMB multiplex.

Referring to FIG. 4, the DMB multiplex includes a fast information chanel (FIC), which is an information area including control information and overhead information, and an MSC (main service) including data for broadcasting. Chanel: hereinafter referred to as “MSC”).

The FIC includes an information area including various types of information for distinguishing a plurality of video, audio and additional data, and user application information for implementing an interactive broadcasting service.

The user application information is information related to broadcast data viewed by a user for providing an interactive service and data for connecting the user's terminal. Here, the information related to the broadcast data means, for example, when the user is watching a celebrity introduction program, a picture, an image, a movie, a drama, etc. of the celebrity. The URL connecting the user and the terminal is representative and means information that provides a path for the user to access the data when the user wants to acquire the data.

The MSC has a middleware configuration that includes one or more video channels, one or more audio channels, and a plurality of separate data channels. The number of channels included in the MSC depends on the policies of each broadcaster. In order to transmit data for such a video channel, an audio channel and a separate data channel, the physical layer of the MSC is composed of a plurality of subchannels. The sub channel includes data for each channel, and the length of one sub channel depends on the size and type of data contained therein. These subchannels are combined into data that constitutes each video, audio, and separate data channel by the information stored in the FIC.

Meanwhile, as a feature of the present invention, the FIC stores various information for using the MSC data as broadcast data and is used as a control signal. User Application Information (K) and User Application Information (User Application Information) t.

For example, user application information K includes a service identifier (SID), a service component identifier (SCIDS), a user application number (number), a user application 1, and a user application 2.

The service identifier (SID) is a key value indicating a service of a corresponding ensemble, and the terminal may determine which service is viewed based on the corresponding value.

The SCIDS (Service Component IDentifierS) is a key value indicating that two service components exist in one service, and the terminal can identify which service components exist in the service by viewing the corresponding value.

The number of user applications is a value that teaches how many application services exist in the current service.

For example, if the user application 1 is designated as a value associated with the WAP application, it is defined as values for activating the application.

If the user application 2 is designated as a value associated with the SMS application, it is defined as values for activating the application.

The user application 1 includes a user application type, a user application data length, and user application data.

The user application type is a value indicating which application to associate with. In the reserved for proprietary user application area of FIG. 4, a value determined between a broadcast service provider and a mobile communication service provider is used.

The user application data length is a value indicating the length of user application data.

The user application data is a format in which values necessary for activating a CDMA associated application of a terminal are defined.

FIG. 5 is a detailed diagram of the MSC. As shown in FIG. 5, video 1 and video 2, audio 1 and audio 2, and other information (etc) indicate service components. In order to actually implement video, audio, and other information of a service component, the physical layer is divided into a plurality of subchannels. Link information for grouping these subchannels and forming one video, audio or other information channel is recorded in the FIC and transmitted. In fact, the data formats coming and going on the system are these subfields with the Eureka-147 protocol, whereby the DMB service is provided to the user.

Meanwhile, a broadcast service system for implementing a bidirectional DMB service using the aforementioned multiplex will be described.

6 is a diagram illustrating a DMB broadcasting system according to the present invention.

Referring to FIG. 6, the broadcasting system of the present invention includes a broadcasting service center 5, a DMB system 7, a mobile communication system 9, and a mobile communication terminal 11.

The broadcast service center 5 produces broadcast data including link data and provides the same to the user. When broadcast data is produced from a broadcaster or the like and is provided to the broadcast service center 5, link data is added to the broadcast data and provided to the DMB system 7. To this end, the broadcast service center 5 is provided with an authoring tool (Authoring Tool or Editing Tooo) that can create and add link data, and is connected to the DMB system 7. It is also connected to the mobile communication system 9 to be connected with the user by the return path included in the link data.

The mobile communication terminal 11 provides a DMB service to the user, and allows the user to acquire broadcast data related information by link data stored in the broadcast data. To this end, the mobile communication terminal 11 receives DMB broadcast data and link data added thereto from the DMB system 7. Further, the mobile communication system 9 is connected so that the user acquires broadcast data related information by link data. In addition, the mobile communication terminal 11 analyzes the link data to inform the user that there is broadcast data related information by the link data, and has a link data agent program for downloading or displaying the corresponding information.

The DMB system 7 provides the user's mobile communication terminal 11 with DMB broadcast data from the broadcast service center 5 and link data added thereto.

The mobile communication system 9 connects the broadcast service center 5 and the mobile communication terminal 11 in response to a connection request by the link data from the mobile communication terminal 11. In addition, when a user requests broadcast data related information, the user receives the broadcast data related information and provides the same to the mobile communication terminal 11.

7 is a diagram illustrating the mobile communication terminal in more detail.

Referring to FIG. 7, the mobile communication terminal 11 includes a DMB module 13, a mobile communication module 15, a memory 19, an output device 21, and a controller 17.

The DMB module 13 receives the DMB broadcast data and the link data added thereto and provides the same to the controller 17. To this end, a DMB receiving antenna and a modulator for receiving broadcast data are provided.

The mobile communication module 15 forms a communication channel with the mobile communication system 9 so as to connect with an object corresponding to the link path recorded in the link data under the control of the control unit 17.

The output device 21 outputs the DMB broadcast data, the pop-up message, and the broadcast data related information to the user under the control of the controller 17. To this end, a screen display device capable of representing an image, a speaker capable of outputting a sound source, and the like.

The memory 19 stores DMB broadcast data and link data, and an application program for driving the same is stored. In addition, a link data agent program for allowing a user to use the link data and the broadcast data related information is stored to provide the programs and data upon request of the controller 17.

The controller 17 provides the DMB broadcast data provided from the DMB module 13 to the output device 21, and determines whether to use the link data received together with the DMB broadcast data. In addition, when it is determined whether the link data is used, if there is broadcast data related information, the connection path by the link path is determined to allow the mobile communication module 15 to form a communication channel connected to the corresponding connection path.

The apparatus may further include an input device for receiving a command for receiving broadcast data related information from a user.

8 is a diagram illustrating a bidirectional DMB service method according to the present invention.

Referring to FIG. 8, a user receives DMB broadcast data through the mobile communication terminal 11 to watch a broadcast. Here, the DMB broadcast data and link data refer to data created and added from the broadcast service center 5 and completed (100).

When the broadcast data is received, the DMB module 13 of the mobile communication terminal 11 provides the DMB broadcast data and link data to the controller 17. The control unit 17 preferentially decodes the FIC. Here, if the demodulator is in the DMB module 13, this step is carried out in the DMB module 13, so that the demodulated data is provided to the controller 17 (101).

In step 101, it is determined whether to decode to the user application information while decoding to the FIC (step 102).

Decoding (103) the MSC if not decoded with user application information in step 102; decoding 104 the main service channel decoded in step 103 into audio / video; and In step 104, the application proceeds to step 105, the application playback with decoded audio / video.

On the other hand, if the decoding to the user application information in the step 102, decoding to the user information (106), and audio / video decoding so that the application playback as audio / video with the user information decoded in the step 106 After proceeding to step 107, the flow proceeds to step 105.

If it is decoded into user application information in step 102, another method includes: step 108 of selecting by the user, step 109 of judging whether the user has selected application driving in step 108; If the driving of the user application is selected in step 109, step 110 of driving the corresponding application is selected, and in step 110, the data is transmitted through the user interface so that the driving of the application is played through the audio / video application. The application data playback step 111 is performed.

9 is a view showing an example of a service providing method of the present invention.

Referring to FIG. 9, the mobile communication terminal should be able to decode FIG. 0 to 13 extensions of audio / video data transmitted from DMB data in the form of a picture structure. Synchronize this with audio and video decoding to process the user interface (UI) to run the application on the terminal. When the user selects to drive the application, the application must be driven to process the service associated with the mobile communication network.

As such, when the DMB data of the broadcast content transmitted to the subscriber is received to the DMB module 13 while the digital multimedia broadcasting and the mobile communication terminal are connected to each other according to the user application, the received broadcast data is received. The decoding is performed by the FIC, and it is determined whether to decode by the user application information in the decoding state by the FIC.

At this time, if it is not decoded by the user application information, the MSC is decoded, and then the main service channel decoded by the MSC is decoded into audio / video and the application is reproduced with the decoded audio / video.

However, to decode the user application information, the user information is decoded into audio video, and the application is reproduced with the decoded audio / video.

On the other hand, when decoding with the user application information, the user application is selected, and at this time it is determined whether to drive to the user-selected application, if it is not driven by the application selected by the user to decode to the MSC, and then decode the MSC decoded in the MS While decoding to audio / video, the application plays back with this decoded audio / video.

On the other hand, when the user runs the application selected by the user, the application is driven, and the application driving is transmitted as the user interface data to reproduce the audio / video data.

Those skilled in the art will appreciate that various changes and modifications can be made without departing from the technical spirit of the present invention. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification but should be defined by the claims.

As described above, the two-way broadcast service system and method of the terrestrial DMB interworking with the mobile communication network according to the present invention is a mobile communication through FIG. 0 to 13 expansion of the FIC of the transmission frame of the Eureka-147 system, which is the basis of digital multimedia broadcasting By providing a two-way broadcast service with the terminal, it provides an opportunity to participate in the broadcast directly using the multi-message service through the two-way broadcast service to enable the digital multimedia broadcasting and provide a breakthrough broadcast service.

Claims (7)

A broadcast service center for creating digital multimedia broadcast data, the broadcast data related information, and link data; A digital multimedia system for providing a user with the digital multimedia broadcasting data, the broadcasting data related information, and the link data added to the broadcasting data from the broadcasting service center; A mobile communication system for forming a communication channel for accessing the broadcast related information by the link data; And Interworking with a mobile communication network comprising a mobile communication terminal for receiving the digital multimedia broadcasting data and the link data, establishing a communication channel with the mobile communication system, and providing the broadcast related information received through the communication channel to a user. In the terrestrial DMB bidirectional broadcast service system, A mobile information system that defines user application information and performs a two-way broadcasting service with a mobile communication terminal by extending Fast Information Group (FIG) formats 0 to 13 of the Eureka-147 standard of the digital multimedia broadcasting. Terrestrial DMB bidirectional broadcasting service system linked with communication network. The method of claim 1, wherein the mobile communication terminal, A DMB module for receiving the digital multimedia broadcasting data and the link data; A memory for storing the link data and the application program; An output device for outputting the broadcast data and the broadcast data related information; A mobile communication module for establishing a communication channel with the mobile communication system for receiving the broadcast data related information; And A control unit which controls the DMB module, the mobile communication module and the output device, extracts the link information from the link data, and causes the mobile communication module to form a communication channel Two-way broadcast service system of the terrestrial DMB interlocked with the mobile communication network comprising a. Two-way broadcasting of terrestrial DMB linked with a mobile communication network using a digital multimedia broadcasting system consisting of a mobile communication terminal receiving program information in connection with a digital multimedia broadcasting receiver receiving program information about broadcast contents provided from a broadcasting center to a subscriber. In the service method, User Information Information is defined through Fast Information Group (FIG) format 0 to 13 extension of Fast Information Channel (FIC), the Eureka-147 standard of the digital multimedia broadcasting, and a two-way broadcasting service with a mobile terminal is provided. A two-way broadcast service method for terrestrial DMB linked to a mobile communication network, characterized in that performed. User Information Information is defined through Fast Information Group (FIG) format 0 to 13 extension of Fast Information Channel (FIC), the Eureka-147 standard for digital multimedia broadcasting, and performs two-way broadcasting service with mobile communication terminals. In the two-way broadcast service method of terrestrial DMB linked to a mobile communication network, Receiving DMB broadcast data to decode a fast information channel (FIC); And In the decoding state, it is determined whether to decode with user application information, and when decoding with user application information, audio / video decoding for application playback as audio / video, or when not decoding with user application information, decoding with MSC and decoding. The decoded MSC into audio / video and playing the application into decoded audio / video A two-way broadcast service method for terrestrial DMB linked to a mobile communication network, comprising: a. The method of claim 4, wherein when decoding to the user application information, Determining whether a user is selected, and if it is determined that the user has selected to drive the application, driving to the selected application; And Reproducing audio / video data by transmitting data through a user interface such that the corresponding application driving is reproduced by an audio / video application. The two-way broadcast service method of the terrestrial DMB linked to the mobile communication network, characterized in that further proceeds. The method according to any one of claims 3 to 5, wherein the user application information (User Application Information), A service IDentifier (SID) that provides a basis for judging viewing of a specific broadcast service as a key value defining a service of a corresponding ensemble; Service Component IDentifiers (SCIDS) for providing a basis for whether a specific service component exists as a Key value defining one broadcast service in which two service components may exist; A user application number (number) defining the number of application services present in the broadcast service; At least one N-th user application that is a value associated with a particular application to activate that application The two-way broadcast service method of the terrestrial DMB interlocked with the mobile communication network comprising a. The method of claim 6, wherein the N-th user application, A user application type that is a value associated with a specific application; A user application data length defining a length of user application data described below; And User Application Data, a format that defines the values needed to activate a CDMA-linked application. A two-way broadcast service method for terrestrial DMB linked to a mobile communication network, comprising: a.

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